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    SubjectRe: [PATCH 2/7] dynamic debug v2 - nfs conversion
    On Tue, 15 Jul 2008 18:56:07 -0400
    Trond Myklebust <> wrote:

    > On Tue, 2008-07-15 at 15:43 -0700, Andrew Morton wrote:
    > > On Tue, 15 Jul 2008 18:30:03 -0400
    > > Trond Myklebust <> wrote:
    > >
    > > > On Tue, 2008-07-15 at 17:32 -0400, Jason Baron wrote:
    > > > > -convert sunrpc debug facility
    > > > >
    > > > > Signed-off-by: Jason Baron <>
    > > > >
    > > >
    > > > Where the hell did this come from, what's its purpose, and WTF haven't
    > > > you Cced so that the rest of us can review it?
    > >
    > > It's on linux-kernel. If you don't have a linux-kernel subscription
    > > then you should fix that. Set up a procmail rule and do a
    > > search-by-subject when needed.
    > I get my daily share of 1000-odd mails from linux-kernel, thanks, but
    > 99% of that goes into the trashcan. I only keep a mail if I see that
    > it's relevant.

    Well stop doing that then. Use procmail to assemble a local
    linux-kernel archive and retain the last month or three's worth of
    traffic. This is trivial to set up and is pretty much essential
    practice for a kernel subsystem maintainer such as yourself.

    > In this case, 1 email out of 7 turns out to be relevant
    > (after I inadvertently deleted the apparently crucial first 2 emails),
    > and there is no changelog entry to tell me what's being done or why.
    > By Ccing the correct list, we at least get a heads-up that this thread
    > might be important. I can't archive all of lkml on my laptop, but I can
    > and do archive all of linux-nfs...

    lkml is a mere 100MB/month. Sorry, but you and others who are
    operating at your level should really just do this.

    Yes, it would be _better_ had Jason done the cc's perfectly, but as I
    said before, that is most uncommon.

    The main downside from what he did is that while it is reasonable to
    assume that all top-level maintainers have a local lkml archive, it
    is not reasonable to assume that _all_ interested-in-nfs individuals
    have one as well.

    But at least he copied _something_ to the right list. That puts him
    ahead of half the pack.

    > > In this case, yes, it would have been nice if Jason had cc'ed lots of
    > > different lists and individuals on the core patch and then selectively
    > > cc'ed lists and individuals on the per-subsystem followup patches. But
    > > I doubt if even 2% of patch submitters manage to do all that correctly.
    > The point is that he is changing a semi-official interface for tracing
    > the NFS kernel activity from userspace. I'd like to know why and how it
    > is being modified before I can ack it.
    > In addition there are several other developers who have a daily interest
    > in using this interface when helping our users, and who might have
    > comments.


    What Jason is brewing up here is pretty major and ambitious revamp of
    our current horridly-ad-hoc kernel debugging practices. Look at this
    piece of horror:

    akpm:/usr/src/25> grep '^dprintk' Tags | wc -l

    (I mean: wtf?)

    So yeah, it will be traumatic and intrusive and a bit risky and will
    require input and perhaps assistance from many developers. But if we
    can pull this off, the long-term benefits will be appreciable.

     \ /
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